Merge pull request #1511 from UncleGrumpy/fixup_ledc

Cleanup ledc driver

Removes an include for a file that does not exist. It was dropped during the PR
introducing the ledc driver, but the include line was left, as well as several
uses of macros defined in the file.

Removes undefined macros, replacing them with their values, and documents the
meaning of the values.

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

Author: bettio

libs/eavmlib/src/ledc.erl

@@ -45,13 +45,13 @@
     stop/3
 ]).
 
--include("ledc.hrl").
-
 -type duty_resolution() :: non_neg_integer().
 -type duty_resolution_cfg() :: {duty_resolution, duty_resolution()}.
 -type freq_hz() :: non_neg_integer().
 -type freq_hz_cfg() :: {freq_hz, freq_hz()}.
--type speed_mode() :: ?LEDC_LOW_SPEED_MODE | ?LEDC_HIGH_SPEED_MODE.
+-type speed_mode() :: 0 | 1.
+%% Speed modes: use `0' for high speed, `1' for low speed.
+
 -type speed_mode_cfg() :: {speed_mode, speed_mode()}.
 -type timer_num() :: 0..3.
 -type timer_num_cfg() :: {timer_num, timer_num()}.